Car-spring



ilm'rno STATES PATENT tw ce.

CAR-'SPRI NG.

SPECIFICATION forming part of Letters Patent No. 270,349, dated January 9, 1883.

Application filed July 27,1882. (No model.)

To all whom it may concern:

Be it known that I, ABRAHAM STROH, of the borough of Mauch Uhunk, Carbon county, and State of Pennsylvania, haveinvented certain new and useful Improvements in Railroad-(Jar Springs; and I do hereby declare that the following is a full, clear, and exact description of the invention,which willenablc Others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and toletters marked thereon, which form a part of this Specification.

The object of myinvention is to furnish arail road-car spring that will be simple, durable, and

cheap; and to this end my invention consists in increasing its durability by having a spring simply made from one piece of spring-steel B, rolled up at both ends, making a double spring of two rolls, each roll to be separate with springing distance between the fakes, as shown at s, Fig. 2. This I find from experience to be the strongest form for a spring. It is cheap, being made from one piece with two places of bearing, requiring only about one half the weight of steel necessary when the bearingis single and made in any other form. Itis simple because it is a bi-roll spring in one piece. It is convenient because it can be held in place tween the pedestals on the car. Fig. 2 is a vertical section of the spring and hood.

The drawings show mysimpleinvention,and make it so plain that I believe it will be readily understood without any further explanation.

I am aware that prior to my invention the volute spring has been in use. .I therefore do not claim the volute, and could not useit. The operation is positively contrary. In somecases I make one coil larger than the other, so that an empty car will rest only on one roll.

What I claim as my invention, and desireto secure by Letters Patent, is

The combination of railroad-car spring B and hood-casing A, all substantially as set forth.

ABRAHAM STROH.

Witnesses:

JAMES KIEFER,

C. ORION STROH. 

